Diamondback Union 1

Sizing Guide



The Full Scoop on the 2021 Diamondback Response

  • The Class 3 Union 1 gets things done. Built on a sleek aluminum frame with internal cable routing, this e-bike is powered by a Bosch Performance Line Speed motor and a powertube integrated 400Wh battery. The Bosch Purion on-board computer lets you focus on the important things with a minimalist design but the data you need at the touch of a button. A 10-speed Shimano drivetrain fine-tunes your pedaling, while Tektro hydraulic disc brakes keep your speed under control. Wide tires on 27.5-inch wheels take the sting out of rough pavement. With built-in lights, an integrated rack, and fenders, the Union 1 lets you cut through city traffic with ease and confidence. 

    • Components subject to manufacturer changes
  • Motor Bosch Performance Speed, 85Nm Torque, 28mph
    Battery Bosch PowerTube 400
    Display Bosch Purion
  • Frame Formed 6061 T6 Oversize Aluminum Alloy Thru Axle Dropout, Disc Brake Specific, Powertube Integrated Battery
    Fork Formed 6061 T6 w/ Integrated Crown, Disc Brake, Thru Axle
    Headset Integrated, Sealed Bearing
    Cranks FSA Forged Aluminum for Bosch system
    Sprocket FSA Forged Spider, 42 tooth, steel w/chainguard
    Drivetrain Shimano Deore M610, SGS
    Shifter Shimano Deore SL-M6000, 10 Speed
    Cassette Shimano 11-32 Tooth, 10 Speed
    Chain KMC x10ePT Ebike Specific
    Front Hub Formula, Sealed Bearing, Thru Axle
    Rear Hub Formula, Sealed Bearing, Thru Axle
    Rims

    Aluminium 27.5", Black Annodized, 25mm ID, Disc Specific, 32 Hole

    Tires

    27.5" x 2.4" Schwalbe Super Moto

    Brakes

     Tektro M735, 4 Piston Front 180mm Rotor, 2 Piston Rear 160mm Rotor

    Brake Levers

    Tektro M735, 2 finger lever
    Handlebar

    Aluminum Alloy 3D Forged

    Stem Aluminum Alloy 3D Forged, +/-7 Degree
    Seat Custom Ergo Performance
    Seatpost

    Aluminum Forged Head, 350mm

    Pedals Shoe friendly Urban design, resin body
  • Grips

    Ergo comfort control

  • Medium 5'7" - 5'10"
    Large 5'10" - 6'1"
    X-large 6'1" - 6'4"

Not sure which model is right for you?

Please note: Specs and components are provided by the manufacturer, and are subject to change.